Armored pneumatic tire.



PATENTED Aug. 20, 1907. .H. w. AVERY & w. s. JUDD.

ARMORED PNEUMATIC TIRE.

APPLICATION IILED FBB. 3. 1906.

UNITED STATES 1 PATENT OFFICE.

, HENRY W. AVERY AND WALLACE s. JUnD, OF CLEVELAND, our; 3.

ARMORED PNEUMATIC. TIRE To all whom it may concern:

Be it known that. we, HENRY W. Avnm and WAL- LACE S. JUDD, both citiz ns ofthe Unite d States, and

both residing at Clevela d, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Armored Pneumatic Tires, of which the following is a full, clear, and exact descrip tion, reference being had to the accompanying drawings.

The object of this invention isto provide a cheap and efiicient'armored tire for automobile use, which shall effectually protect the inner tube from puncture, without interfering with the resilience, the appearance, or wear of the outer sheath.

To this end our invention consists of a strip of puncture resisting material wound spirally upon itself, and pressed into a sort of crescent form in cross section, embedded within the sheath, extending continuously around the wheel. Such metal shield effectively protects the inner tube from puncture. I

' As the wheel rotates and the lower portion of the tire flattens the spiral tube slides into or out of itself to accommodate itself thereto. To prevent this sliding from .wearingthe outer sheath, we may put rubber or other tion, as set out in the claims thereof.

In the drawings, Figure 1. is across section through a .tire embodying our invention; Fig.2 is a perspective view of the metal shield; 3 is alongitudinal section of the shield and Fig. 4 is a plan of the shield shown in Fig. 3. These lasttwo figures show the shield afterthe metal strip constituting it has been wound spirally I and. flattened but before it has been curvedinto the form shown in Fig. 2. r

Referring first to 1, A represents an ordinary oiiter sheath, which is shown as of the 'clencher ty'pe, held in place on a suitable rim B, and carrying an'inner tube F. Within the tread portion of the sheath A, is mounted our shield 'Ci- :This shield consists, prefer ably, ,of a strip of thiii sheet metal wotihd upon itself to make a helicaltube, which is then fiatt andcurvedinto'an attenuated crescentshapein erse section, as shown, and curved longitudinally iiitd an annulus, the meeting ends beingsecured together.

Fig. Lshows a of rubber or other mate tween the two members 0 of theshield; Outside of Specification of Letters Patent.

Patented Aug. 20, 1907.

Applioationiiled February 3,1905. Serial No. 243.920.

these two members is also shown a coating of rubber D,

D", and outside of this is an inclosing sack of canvas E.

This canvas is vulcanized in place within the sheath.

As the sheath flattens on the under side of the wheel,

the consecutive plies of the shield telescope into or out of one another. This may cause some wear or grating of the rubber D and D but this is immaterial, as this rubber is all contained within the canvas E, and the wear does not reach the sheath itself.

The tires are made rights and lefts, so that the wheel may be rotating in the direction to cause the consecutive plies of the shield topass over the ground with the laps upward preventing the edges cutting, pinching or and allow easy telescoping of the parts; the tubular sheath being flattened and curved transversely and longitudinally to correspond to the tire. V

. 2. In a vehicle tire, in combination, an outer sheath and a protecting shield cmbedded'therein and comprising a fln't sheet metal strip wound with overlapping edges and fluttened and curved to make an approximately crescent shape in cross section.

3. In a vehicle tire, in combination, an outer sheath and a protecting shield embedded therein and comprising a flat strip wound with overlapping edges and flattened and curved 'to make an approximately crescent shape in crossv section and a lining placed within such tubular shield.

mg outside thereof, and, a canvas sack inclosing the shield and lining and cover, said parts being all vulcanized within the tread of the sheath. l

6. In combination, a. vehicle tire of flexible material and nprotecting shield comprising a continuous spirally wound member whose edges overlap, which member is compressed 

